Valve.



rwandais. E. novvann, or aannemen, fr

VALVE;

d y*To all whom. may concern.' a

' Be it known that I, WALTER Howanm a citizen of the United States, residing at Ridlonville, in the county of Oxford and State of Maine, have invented new and useful Improvements in Valves, of which.; the

following is a speciiication.

Mylpresent invcntionrelates to valves. One object of my .invention is to' provide a valve having seat means of such construction that the same may be readily removed and renewed when occasion requires.

Anotherobject of my invention is to provide `a valve of such construction and employing parts of such material as will render `the valve eective for use in connection with relief lines of sulfite digesters.

Further objects of the inventionare to generally improve` and simplify the construction of a valve device and to provide rone that may be manufactured and soldat a moderate figure.

The preferred embodimentv of the inven-y tion is shown in the drawings accompanying is the chamber of an angle valve. Of course it is immaterial what type of valve is used, the one shown being by way of example merely. The inlet portion fof 4the valve is designated 2 and at said .inlet the valve .provided with suitable means'to engage s upply pipes, the means shown consisting of a ange 3 provided with holes 4 through which connecting bolts may be passed. The 'chamber preferably has an interior lining 5 of malleable material' such as lead which may have fastening collars or flanges 6 and 7 thereon to engage ingrooves or recesses 6 and 7 in the chamber. At the upper end the valve chamber is attached in a suitable manner to a bracket member 8 serving as a ide for avalve stem 9 shown as part-ly provided with screw' threads at 10. The lower portion of the valve stem is provided with an exterior lining 11 preferably` of Speomcation ef Letters Patent. Appucmon mea November so, 191s. amai no'. vessie.

'tween the bracket 'and chamber.

Patented Main-12, 1918.

lead and positively fastened in place by collars or flanges 12 engaging in annular dovetailed grooves in the rod, and which may be doveftail in cross section as shown. 4The means for securing the bracket and valve chamber together is of any suitabletype'and as shown comprises the ianges 13 and 14 having alining openings through which are passed bolts 15. The bracket 8 at its upper end is rovided with an intericrly screw threaded) which, the valve stemv 9 works; Beyond the hub 16, the stem 9 is provided with a suitable operatin .device shown as a hand en.- ga'ingl disc t the upper portion of the chamber 1 is hub 16 on the screw threads of' provided -a removable disc 18 through which Y the stem 9 passes, the disc beingl seated by means of a ange 19 thereod engaging rib or langego lining' and being clamped be- It is to be noted that the disc 18 is disposed in the openinrr at the top of the valve chamber While the flange 19 is ldisposed above and in alinement with the rib or Hange 7 so that when the bolt or nut arrangements 14 and l5 are tightened the bracket. pressing against the iiange 7 compresses the flange into snug engagement with' the recesses 7 in the cham- 85 her to consequently increase the efficiency Tit the joint between the chamber and the bracket. f

The plate enbase 14- eit the bracket is provided with an opening, the wall of whichl is screw threaded. which opening contains suitable packing 2,0l which is maintained in tight or packing relation to the valve stem by means of `a `gland 21 having screw threads at 22 to engage therr'srew threads of the recess.

lThe base of the valve chamber 1, is con i nected in a suitable manner to an `outlet pipe which is designated 23 and which hasv a lining of lead 24 therein. Such means as shown consist of thefianges 25 having suitable openings therein through which are passed bolts 26. flange 25 of the valve chamber, is secured an .annular or disc valve seatdesignated 2'( which is provided with openings through which the bolts 26 may also pass and' y means of which it may be secured in position. The disc seat 2,2' is provided with a iiange 28 adapted to extend into the valve chamber. Such iiange 21 is beveledor ir clined as shown at 22` intermediate the pipe 23 andV BEST AVMLABLE coP The stem 9 is provided with a cap 29 which extends into a recess provided in a "head 30. Said head 30 isscrevv threaded at 3l and receives a nut 32 provided with screwv threads to engage the threads 31, to thereby fasten the head to the stem 9. From the head is supported in any suitable manner a disc valve 33 as by means of a ring 34: dove-tail in cross section provided preferably on the disc and engaging in a correspondingly shaped recess in the head 80.

' The disc 33 is beveled as shown to correspond to the beveled seat of the disc seat n member 27.

It is clear that the valve is opened and closed'by adjusting the stein 9 through the medium of the disc 17 relatively toward and away from the disc member 2T.

By reason ofv the particular manner of fastening the 'disc'valve seat 2T and the disc valve 33, the san'ieinay be readily re moved atall times and replaced when necessary or new parts substituted in their stead when they become worn; V

The valve described 1s oi a type which is especially useful for connection in'reliel" lines of'sulfite digesters. Lf 'l`o, thisl end the several parts with which-:the solution contacts are made of such metal as will not be attacked by the elements the solution. To this end the valve chamber 1, head 30, nut

.32, disc 1S and stem 9 are preferably construc-ted of bronze and the valve lscatv disc 27* and valve disc 33 and linings 5 and l1 are preferably made of lead.f`

In connection with making the disc ot' the valve 33 of lead, rings such" as 3ft may be readily driven into effective engagement with the dove-tail slot or recess :in the As' merely the preferred embodiment .of

the invention has been shown and described, and as changes in the details of construction may suggest vthemselves, such changes are.

reserved providedV they fall Within the spirit and scope of the appended claim.

Having thus described my said inventionv a/llange secured adjacent the endof one ol' the ports so that the disc is in contact with the lining, said disc being provided with a hole, a valve stein operable through said. hole, said stem heilig covered with malleable material vheld in place by engaging in spaced annular dove-tailed grooves, said stein being provided at one end with a head having a beveled valve held thereon by dove-tailed reces-ses` said headA being secured to the stein.

l l WALTER E. HOWARD. Witnesses HAROLD MCINNES,

monos A. HUToHINs. 

